Johann urbanek



(No Model.)

J. URBANEK. GLAZIERS DIAMOND. No. 408,055. Patented July 30, 1889.

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UNITED STATES PATENT OFFICE.

JOHANN URBANEK, OF VIENNA, AUSTRIA-HUNGARY.

GLAZIERS DIAMOND.

I SPECIFICATION forming part of Letters Patent No. 408,055, dated July 30, 1889.

Application filed June 1, 1888. Serial No. 275,709. (No model.)

To all whom it may concern:

Be it 'known that I, JOHANN URBANEK, a subject of the Emperor of Austria, and a resident of Vienna, in the Empire of Austria, have invented certain new and useful Improvements in Glaziers Diamonds, of which the following is a specification.

In the glaziers diamonds heretofore used the mounting for holding the diamond or cutter is either firmly connected with the handle or forms a paralellopiped, which is made somewhat sloping below and is fitted to turn alittle upon the prolongation of the handle. Both kinds of tools have the disadvantage that they cannot be safely guided or effect a perfectlyrectilinear out without the employment of a rule. The former disadvantage is especially great if the cutting must be performed by guiding the tool with the unaided handfor example, in the case of curvesand good results can be obtained only after long practice. To obviate these defects is the object of the present invention, which is illustrated in the accompanying drawings.

In Figure 1 the improved glaziers diamond is shown in its normal position, and in Fig. 2 in the position it occupies in the cutting operation.

This tool comprises a block a, in which the diamond or cutter b is set, and a handle 0, to which the said block is jointed, so as to be capable of turning a little upon a pivot or axis (1, arranged at a right angle to the l0ngitudinal axis of the handle. Theblock (LlS for this purpose provided with a cavity f, in which the end of the handle 0 is located, the latter bein g connected with the block through the medium of the aforesaid pivot or axis (1. A second obtuse diamond g, which is arranged in proximity to the rear end of the block in such a manner that it can be adjusted parallel or approximately parallel with the longitudinal axis of the handle by a small screw h or other adjusting device, is adapted to guide the diamond or cutter placed somewhat eccentrically to the axis (1.

Provision can be made on theh'andle-such as, for example, at Zfor breaking the glass after making the cut.

Having now particularly described and ascertained the nature of my said invention and in what manner the same is to be per formed, I declare that what I claim. is

A glaziers diamond consisting of a recessed head or block, a handle pivoted within said recess, and two diamonds or cutting-points, one of which is stationary and eccentrically disposed with reference to the pivot of the handle, while the other is adjustably secured to the block, substantially as described.

In testimony wherco'fl have affixed my sig nature in presence of two witnesses.

JOH. URBANEK.

Vitnesses:

T. G. HARDY, E. G. J. MoELLER. 

